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                  <p class="p_Heading1"><span class="f_Heading1">Requirements</span></p>



  
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                <p class="p_BodyText"><span class="f_BodyText">The </span><span class="f_UIControl">Require</span><span class="f_BodyText"> tab of the element</span><span class="f_UIControl"> Properties</span><span class="f_BodyText"> dialog is shown below. Use this page to create requirements that this element is designed to meet. Requirements are of two types: </span><span class="f_BodyText" style="font-style: italic;"><a href="internalrequirements.htm">internal requirements</a></span><span class="f_BodyText"> (responsibilities) and </span><span class="f_BodyText" style="font-style: italic;"><a href="externalresponsibilities.htm">external requirements</a></span><span class="f_BodyText"> (system requirements). Enterprise Architect shows both types, but you can only edit the internal type from this tab.</span></p>
<p class="p_TextIndentedL2"><img src="elementresponsibilities.png" width="385" height="465" border="0" alt="elementresponsibilities"></p>
<p class="p_BodyText"><span class="f_BodyText">Internal requirements form the functional requirements of the system to be built. The meaning of the requirement can vary depending on which element is the host; for example, a business process requirement might mean something different to a Use Case requirement, which again might mean something different to a Class requirement. Use these as best suit your model.</span></p>
<p class="p_BodyText"><span class="f_BodyText">Use the <a href="setfeaturevisibility.htm">Specify Feature Visibility</a> function to show the requirements for an element on the diagram directly (it is also possible to show inherited requirements in this way).</span></p>
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<td valign="bottom" width="955" bgcolor="#efeff7" style="width:955px; background-color:#efeff7;"><p class="p_TiporNote" style="border-top: none; border-right: none; border-left: none;"><span class="f_TiporNote">Note:</span></p>
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<td width="955" bgcolor="#f7f7ff" style="width:955px; background-color:#f7f7ff;"><p class="p_TiporNoteText"><span class="f_TiporNoteText">External requirements are those connected to this element using a Realization connector.</span></p>
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<td valign="top" width="120" bgcolor="#e3e6ed" style="width:120px; background-color:#e3e6ed; border: solid 1px #000000;"><p class="p_Tableheader"><span class="f_Tableheader">Option</span></p>
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<td valign="top" width="444" bgcolor="#e3e6ed" style="width:444px; background-color:#e3e6ed; border: solid 1px #000000;"><p class="p_Tableheader"><span class="f_Tableheader">Use to</span></p>
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<td valign="top" width="120" style="width:120px; border: solid 1px #000000;"><p class="p_Tabletext"><span class="f_Tabletext" style="font-weight: bold;">Requirement</span></p>
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<td valign="top" width="444" style="width:444px; border: solid 1px #000000;"><p class="p_Tabletext"><span class="f_Tabletext">Enter the name and high level detail of the requirement.</span></p>
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<td valign="top" width="120" style="width:120px; border: solid 1px #000000;"><p class="p_Tabletext"><span class="f_Tabletext" style="font-weight: bold;">Type</span></p>
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<td valign="top" width="444" style="width:444px; border: solid 1px #000000;"><p class="p_Tabletext"><span class="f_Tabletext">Specify the type; for example, </span><span class="f_Tabletext" style="font-weight: bold;">Functional</span><span class="f_Tabletext"> or </span><span class="f_Tabletext" style="font-weight: bold;">Non-functional</span><span class="f_Tabletext">. Functional requirements are things that the system must do, such as identify franked, unfranked and total credit for a dividend; non-functional requirements are things that the system must be, such as reliable, cost effective.</span></p>
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<td valign="top" width="120" style="width:120px; border: solid 1px #000000;"><p class="p_Tabletext"><span class="f_Tabletext" style="font-weight: bold;">Last update</span></p>
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<td valign="top" width="444" style="width:444px; border: solid 1px #000000;"><p class="p_Tabletext"><span class="f_Tabletext">Specify the date of the last requirement update.</span></p>
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<td valign="top" width="120" style="width:120px; border: solid 1px #000000;"><p class="p_Tabletext"><span class="f_Tabletext" style="font-weight: bold;">Status</span></p>
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<td valign="top" width="444" style="width:444px; border: solid 1px #000000;"><p class="p_Tabletext"><span class="f_Tabletext">Specify the current status of the requirement.</span></p>
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<td valign="top" width="120" style="width:120px; border: solid 1px #000000;"><p class="p_Tabletext"><span class="f_Tabletext" style="font-weight: bold;">Difficulty</span></p>
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<td valign="top" width="444" style="width:444px; border: solid 1px #000000;"><p class="p_Tabletext"><span class="f_Tabletext">Identify the complexity of implementing the current requirement.</span></p>
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<td valign="top" width="120" style="width:120px; border: solid 1px #000000;"><p class="p_Tabletext"><span class="f_Tabletext" style="font-weight: bold;">Priority</span></p>
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<td valign="top" width="444" style="width:444px; border: solid 1px #000000;"><p class="p_Tabletext"><span class="f_Tabletext">Specify how urgent the requirement is.</span></p>
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<td valign="top" width="120" style="width:120px; border: solid 1px #000000;"><p class="p_Tabletext"><span class="f_Tabletext" style="font-weight: bold;">Stability</span></p>
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<td valign="top" width="444" style="width:444px; border: solid 1px #000000;"><p class="p_Tabletext"><span class="f_Tabletext">Specify the estimated stability of the requirement. </span></p>
<p class="p_Tabletext"><span class="f_Tabletext">This is an indication of the probability of the requirement - or understanding of the requirement - changing. High stability indicates a low probability of the requirement changing.</span></p>
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<td valign="top" width="120" style="width:120px; border: solid 1px #000000;"><p class="p_Tabletext"><span class="f_Tabletext">Notes</span></p>
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<td valign="top" width="444" style="width:444px; border: solid 1px #000000;"><p class="p_Tabletext"><span class="f_Tabletext">Record details of the requirement. You can format the notes text using the </span><span class="f_UIControl"><a href="rich_text_notes_toolbar.htm">Rich Text Notes</a></span><span class="f_Tabletext"> toolbar at the top of the field.</span></p>
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<td valign="top" width="120" style="width:120px; border: solid 1px #000000;"><p class="p_Tabletext"><span class="f_Tabletext" style="font-weight: bold;">Move External</span></p>
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<td valign="top" width="444" style="width:444px; border: solid 1px #000000;"><p class="p_Tabletext"><span class="f_Tabletext">Make an <a href="moveinternalresponsibilityt.htm">internal responsibility into an external requirement</a>.</span></p>
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<td valign="top" width="120" style="width:120px; border: solid 1px #000000;"><p class="p_Tabletext"><span class="f_Tabletext" style="font-weight: bold;">New</span></p>
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<td valign="top" width="444" style="width:444px; border: solid 1px #000000;"><p class="p_Tabletext"><span class="f_Tabletext">Create a new requirement.</span></p>
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<td valign="top" width="120" style="width:120px; border: solid 1px #000000;"><p class="p_Tabletext"><span class="f_Tabletext" style="font-weight: bold;">Save</span></p>
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<td valign="top" width="444" style="width:444px; border: solid 1px #000000;"><p class="p_Tabletext"><span class="f_Tabletext">Save changes to requirements.</span></p>
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<td valign="top" width="120" style="width:120px; border: solid 1px #000000;"><p class="p_Tabletext"><span class="f_Tabletext" style="font-weight: bold;">Delete</span></p>
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<td valign="top" width="444" style="width:444px; border: solid 1px #000000;"><p class="p_Tabletext"><span class="f_Tabletext">Delete a selected requirement.</span></p>
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<td valign="top" width="120" style="width:120px; border: solid 1px #000000;"><p class="p_Tabletext"><span class="f_UIControl">Defined</span><span class="f_Tabletext"> </span></p>
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<td valign="top" width="444" style="width:444px; border: solid 1px #000000;"><p class="p_Tabletext"><span class="f_Tabletext">List the defined requirements associated with this element.</span></p>
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